<template>
  <div class="app-container">
    <!-- 数据查询部分 -->
    <div class="filter-container">
      <el-input
        v-model="listQuery.title"
        placeholder="书名"
        style="width: 200px"
        class="filter-item"
        clearable
        @keyup.enter.native="handleFilter"
        @clear="handleFilter"
      /><el-input
        v-model="listQuery.author"
        placeholder="作者"
        style="width: 200px"
        class="filter-item"
        clearable
        @keyup.enter.native="handleFilter"
        @clear="handleFilter"
      />
      <el-select
        v-model="listQuery.category"
        placeholder="分类"
        clearable
        class="filter-item"
        @change="handleFilter"
         
        
      >
        <el-option
          v-for="item in categoryList"
          :key="item.value"
          :label="item.label"
          :value="item.label"
        />
      </el-select>
      <el-button
        v-waves
        class="filter-item"
        type="primary"
        icon="el-icon-search"
        style="margin-left: 10px"
        @click="handleFilter"
        >查询</el-button
      >
      <el-button
        v-waves
        class="filter-item"
        type="primary"
        icon="el-icon-edit"
        style="margin-left: 15px"
        @click="handleCreate"
        >新增
      </el-button>

      <el-checkbox
        v-model="showCover"
        class="filter=item"
        style="margin-left: 5px"
        @change="changeShowCover"
        >显示封面</el-checkbox
      >
    </div>
    <!-- 数据表单显示部分 -->
         <el-table
      :key="tableKey"
      v-loading="listLoading"
      :data="list"
      border
      fit
      highlight-current-row
      style="width: 100%"
      :default-sort="defaultSort"
      @sort-change="sortChange"
    >
      <el-table-column
        label="ID"
        prop="id"
        sortable="custom"
        align="center"
        width="80"
      />
      <el-table-column
        label="书名"
        width="150"
        align="center"
      >
        <template slot-scope="{ row: {  titleWrapper }}">
         <span v-html="titleWrapper"> </span>
        </template>
      </el-table-column>
      <el-table-column
        label="作者"
        width="150"
        align="center"
      >
        <template slot-scope="{ row: { authorWrapper  }}">
          <span v-html="authorWrapper"   />
        </template>
      </el-table-column>
      <el-table-column label="出版社" prop="publisher" width="150" align="center" />
      <el-table-column label="分类" prop="categoryText" width="100" align="center" />
      <el-table-column label="语言" prop="language" align="center" />
      <el-table-column
        v-if="showCover"
        label="封面"
        width="150"
        align="center"
      >
        <template slot-scope="{ row :{ cover }}">
          <a :href="cover" target="_blank">
            <img :src="cover" style="width:120px;height:180px">
          </a>
        </template>
      </el-table-column>
      <el-table-column label="文件名" prop="fileName" width="100" align="center" />
      <el-table-column label="文件路径" prop="filePath" width="100" align="center">
        <template slot-scope="{ row: { filePath }}">
          <span>{{ filePath | valueFilter }}</span>
        </template>
      </el-table-column>
      <el-table-column label="封面路径" prop="coverPath" width="100" align="center">
        <template slot-scope="{ row: { coverPath }}">
          <span>{{ coverPath | valueFilter }}</span>
        </template>
      </el-table-column>
      <el-table-column label="解压路径" prop="unzipPath" width="100" align="center">
        <template slot-scope="{ row: { unzipPath }}">
          <span>{{ unzipPath | valueFilter }}</span>
        </template>
      </el-table-column>
      <el-table-column label="上传人" prop="createUser" width="100" align="center">
        <template slot-scope="{ row: { createUser }}">
          <span>{{ createUser | valueFilter }}</span>
        </template>
      </el-table-column>
      <el-table-column label="上传时间" prop="createDt" width="100" align="center">
        <template slot-scope="{ row: { createDt }}">
          <span>{{ createDt | timeFilter }}</span>
        </template>
      </el-table-column>
      <el-table-column
        label="操作"
        width="120"
        align="center"
        fixed="right"
      >
        <template slot-scope="{ row }">
          <el-button type="text" icon="el-icon-edit" @click="handleUpdate(row)" />
          <el-button type="text" icon="el-icon-delete" style="color:#f56c6c" @click="handleDelete(row)" />
        </template>
      </el-table-column>
    </el-table>

    <pagination
      
      :total="total"
      :page.sync="listQuery.page"
      :limit.sync="listQuery.pageSize"
      @pagination="refresh"
    />
  </div>
</template>
<script>
import Pagination from "../../components/Pagination/index";
import waves from "../../directive/waves/waves";
import { getCategory, listBook, deleteBook } from "../../api/book";
import { parseTime } from "../../utils";

export default {
  components: { Pagination },
  directives: { waves },
  //没有路径的直接用过滤器显示无
  filters: {
    valueFilter(value) {
      return value || "无";
    },
    timeFilter(time) {
      return time ? parseTime(time, "{y}-{m}-{d} {h}:{i}") : "无";
    },
  },
  data() {
    return {
      tableKey: 0,
      listLoading: true,
      listQuery: {},
      showCover: false,
      categoryList: [],
      list: [],
      total: 0,
      defaultSort: {},
    };
  },
  created() {
    this.parseQuery();
  },
  mounted() {
    this.getList();
    this.getCategoryList();
  },
  beforeRouteUpdate(to, from, next) {
    if (to.path === from.path) {
      const newQuery = Object.assign({}, to.query);
      const oldQuery = Object.assign({}, from.query);
      if (JSON.stringify(newQuery) !== JSON.stringify(oldQuery)) {
        this.getList();
      }
    }
    next();
  },
  methods: {
    parseQuery() {
      
      const query = Object.assign({}, this.$route.query);
      let sort = "-id";
      const listQuery = {
        page: 1,
        pageSize: 20,
        sort:"+id"
      };
      if (query) {
        query.page && (query.page = +query.page);
        query.pageSize && (query.pageSize = +query.pageSize);
        query.sort && (sort = query.sort);
      }
      const sortSymbol = sort[0];
      const sortColumn = sort.slice(1, sort.length);
      console.log(sortSymbol, sortColumn);
      this.defaultSort = {
        prop: sortColumn,
        order: sortSymbol === "+" ? "ascending" : "descending",
      };
      this.listQuery = { ...listQuery, ...this.listQuery };
      console.log("this.listQuery ", this.listQuery);
    },
    sortChange(data) {
      console.log("sortChange", data);
      const { prop, order } = data;
      this.sortBy(prop, order);
    },
    //升序和降序14-7
 sortBy(prop, order) {
      if (order === 'ascending') {
        this.listQuery.sort = `+${prop}`
      } else {
        this.listQuery.sort = `-${prop}`
      }
      this.handleFilter()
    },
    getList() {
      this.listLoading = true;
      listBook(this.listQuery).then((response) => {
        const { data,total } = response;
        // const { list, count } = response.data;
        this.list = data
        this.total=total
        this.listLoading = false;
        this.list.forEach((book) => {
         book.titleWrapper = this.wrapperKeyword('title', book.title)
          book.authorWrapper = this.wrapperKeyword('author', book.author)
        // console.log(book);
        });
        console.log("this.listQuery", this.listQuery);
      });
    },
    //高亮显示
     wrapperKeyword(k, v) {
      function highlight(value) {
        return `<span style="color: #1890ff">${value}</span>`
      }

      if (!this.listQuery[k]) {
        return v
      } else {
        return v.replace(new RegExp(this.listQuery[k], 'ig'), v => highlight(v))
      }
    },
    getCategoryList() {
      getCategory().then((response) => {
        this.categoryList = response.data;
        console.log("categoryList", this.categoryList);
      });
    },
    refresh() {
      this.$router.push({
        path: "/book/list",
        query: this.listQuery,
      });
    },
    handleFilter() {
      console.log('handleFilter1', this.listQuery)
      // this.getCategoryList()
      this.listQuery.page = 1
      this.refresh()
    },
    handleCreate() {
      this.$router.push("/book/create");
    },
    handleUpdate(row) {
      console.log("handleUpdate", row);
      this.$router.push(`/book/edit/${row.fileName}`);
    },
    //电子书删除14-10
    handleDelete(row) {
      this.$confirm('此操作将永久删除该电子书，是否继续？', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        deleteBook(row.fileName).then(response => {
          this.$notify({
            title: '成功',
            message: response.msg || '删除成功',
            type: 'success',
            duration: 2000
          })
          this.handleFilter()
        })
      })
    },
    changeShowCover(value) {
      this.showCover = value;
    },
  },
};
</script>

<style lang="scss" scoped>
</style>